Why is continual user involvement a useful way to discover system requirements? under what conditions might it be used? under what conditions might it not be used?

continual user involvement gives the flexibility to analyze the requirements in right direction. because there is continuous meetings with the end user and he can provide right direction or avoids wrong interpretation of the requirement

Explanation:

continual user involvement is useful when we are following agile methodology where we are building complex systems. it is not useful for simple sytems and following waterfall methodology

The cloud is defined as the elastic leasing of pooled computer resource over the Internet.

Many companies currently use the cloud to store their information and infrastructure instead of leaving it on the physical computer. As time passes, more companies have continuously started to store their information on the cloud. Predictions show that in the future, nearly all companies will use this to store information.